Nut-look



PATENTED FER-16, 1904.

W. R. ROSE.

NUT LOCK.

APPLICATION FILED APR, 16, 1903;

H0 MODEL.

Wllzam ijiosc, 13y AHopgcys, v

UNITEn STATES Patented February 16, 1904.

PATENT OFFICE.

NUT-LOOK.

SPECIFICATION forming part of Letters Patent No. 752,263, dated February 16, 1904.

Application filed April 16, 1903.

To all whom it may concern:

Be it known that I, WILLIAM R. Rose, a citizen of the United States, residing at Auberry,

in the county of Fresno and State of California, have inventeda new and useful Nut-Lock, of which the following is a specification.

This invention relates to nut-locks of that class which have a locking engagement between the nut and the surface through which the bolt passes, and has for its object to maintain a longitudinal tension upon the bolt, so as to insure a proper locking engagement of the nut, and also to provide for conveniently loosening the bolt, so as to quickly break the locking engagement of the nut in order that the latter may be readily removed without damaging either the bolt .or the nut and permitting of the renewed use of the device.

Viith these and other objects in view the present invention consists in the combination and arrangement of parts, as will be hereinafter more fully described, shown in the ac-.

companying drawings, and particularly pointed out in the appended claims, it being understood that changesv in the form, proportion, size, and minor details may be made within v the scope of the appended claims without departing from the spirit or sacrificing any of the advantages of the invention.

In the drawings, Figure 1 is a perspective view illustrating theapplication of the present invention. Fig. 2 is an end elevation of the headed ends of a plurality of bolts and showing the manner of maintaining a longitudinal tension upon said bolts. Fig. 3 is a transverse sectional view taken through one of the bolts. Fig. 4 is a detail perspective view of the locking-Washer. Fig. 5 is a detail perspective view showing the inner face of the nut. Fig. 6 represents a detail perspective view of oneend of one of the L-shaped evers.

Corresponding parts in the several figures of the drawings are designated by like char- ,acters of reference.

Referring to the accompanying drawings, 1 designates a bolt of common or ordinary form, having the usual head 2 and also provided with an angular portion 3, adjacent to the inner side of the head. Fitted to the outer side of the Serial No. 15 2,970. (No model.)

object to which the bolt may be applied is-a suitable metallic wear-plate 4, which is perforated to receive the bolt and is provided at the opposite sides of the perforation with an outstanding lug 5 and a socket or recess 6.

As shown in Figs. 3 and 4 of the drawings, there is employed a locking-washer 7, which is preferably circular-in form and provided with a central opening or perforation 8 for the reception of the projecting threaded end of the bolt. At one side of the central perforation there is provided a peripheral notch 9, which receives the projecting lug 5 on the wear-plate, and diametrically opposite the notch there is provided a lug 10 for engagement with the socket or recess 6 in the wearplate. At the opposite ends of a line drawn at substantially right angles to a line connecting the notch 9 and lug 10 are provided ratchetteeth 11, which are preferably formed by striking up portions of the metallic washer. From the foregoing description it will be apparent that the locking-washer fits snugly against the surface to which the nut is to be locked, and is held against turning by reason of the interlocking engagement between the lugs and the recess. The nut 12 is provided on its inner face with ratchet-shoulders 13,

which are adapted to engage with the teeth 11 on the locking-washer, so as to prevent unscrewing of the nut, as will be understood.

In Fig. 1 of thedrawings the locking-washer 14 is substantially the same as the washer 7. and difl'ers only in shape, while the washer 15 is employed in conjunction with a pair of adjacent bolts and is provided with a paiixof perforations to receive the respective bolts, so that such a washer does not require the lugs and recess to prevent the washer; otherwise all of the washers are alike in construction and operation.

To maintain a longitudinal tension upon the bolts, I have provided a pair of opposite duplicate levers 16, each lever being of substantially L shape or having an inwardly-projecting lug or shoulder 17 provided at one end only. As best illustrated in Fig. 2 of the drawings, it will be seen that these levers are applied to the head ends of the bolts and are located at opposite sides thereof. Each lever is accidental turning of pivoted, as at 18, adjacent to the lug or shoulder 17 and to the object through which the bolt passes, sothat the lever is movable in a plane at substantially right angles to that of the bolt, and both levers have their upper faces beveled at the inner edges thereof and are adapted to be moved inwardly and forced between the head of the bolt and the adjacent surface through which the bolt passes, thereby forming a wedge and placing a longitudinal tension upon the bolt, the friction betweenthe bolthead and the wear-plate serving to hold the wedge-like levers firmly in locked position. Each lever is provided with an outwardlyprojecting handle 19, located opposite the shoulder end thereof, and the latter engages the inner side of-the free end of the other lever, so that by operating one of the latter the other lever is automatically disengaged from the bolt-head, as illustrated in dotted lines in Fig. 2, whereby the bolt may be conveniently released, so as to permit of the ready removal of the nut. It will be noted that one side of the bolt-head which is adjacent to the contiguous pivoted portion of the lever is cut away or flattened, as at 20, so that the lever may be thrown into alinement with this flattened portion and therebydisengaged from the bolt-head.

Although I have shown the levers applied to a plurality of bolts, it will of course be understood that a single bolt may be equipped with such levers and with equal effect. Also the respective levers engage opposite sides of the angular portion of the bolt, and thereby effectively prevent axial turning of the latter.

What is claimed \is 1. In a nut-lock, the combination with a bolt and a nut, of a movable tension device pivoted to swing between the head of the bolt and the adjacent surface and having the upper edge thereof beveled to facilitate its insertion.

2. In a nut-lock, the combination with a bolt having an angular portion adjacent the head thereof, and a nut, of opposite laterally-movable independent devices detachably interposed between the head of the bolt and the adjacent surface and engaging one of the flat faces of said bolt to lock it against turning, and means for holding said devices in locked position.

3. In a nut-lock, the combination with a bolt having an angular portion adjacent its head,

and a nut, of a pair of levers pivoted at oppo-.

site sides of the bolt and movable inwardly between the head of the bolt and the adjacent surface into position to engage one of the flat faces of said bolt, and means for holding said levers in locked position.

4. In a nut-lock, the combination with a bolt having a flat face adjacent the head thereof, and a nut, of a pair of levers pivoted at opposite sides of the bolt and movable inwardly between the head of the bolt and the adjacent surface, each lever having a lateral lug for engaging and automatically releasing the other lever on the outward movement of one of said levers, and means for holding said levers in locked position.

5. In anut-lock, the combination with abolt having a flat face adjacent the head thereof, and a nut, -of a pair of levers located at opposite sides of the bolt and pivoted adjacent to the head thereof, the adjacent portion of said head being cut away or flattened, said levers being movable inwardly to engage said bolt, and means for holding said levers in locked position.

6. In a nut-lock, the combination with a plurality of bolts having flat faces adjacent the heads thereof, and nuts therefor, having a locking engagement with the adjacent surface through which said bolts pass, of a pair of levers pivoted on opposite sides of the bolts adjacent to the respective opposite end bolts and movable inwardly between the heads of the bolts and the adjacent surface into position to engage the flat faces of said bolts, the end bolts having their heads cut away or flattened adjacent to the respective levers, and means for holding said levers in locked position.

7. In a nut-lock, the combination with a bolt, and a nut and washer having interengaging projections and depressions, of a movable tension device pivoted to swing between the head of the bolt and the adjacent surface for maintaining the interengagement.

In testimony that 1 claim the foregoing as my own I have hereto aflixed my signature in the presence of two witnesses.

WILLIAM R. ROSE.

Witnesses:

ROBERT SUDDEN, U. M. TIIoMAs. 

